A car running at 60 kph has a braking distance of 30 m. If the coefficient of resistance between the tire and pavement is 0.5, find the grade if said car travel was uphill.
Q: 6. It takes 500 W of power to move an object 96 m in 12 s. What force is being applied to the…
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Q: Water flows over a section of Niagara Falls at a rate of 1500 kg/s and falls 75 m. How many 60-W…
A: Given: The rate of fall of water is 1500 kg/s. The height of the fall is 75 m. The power of the bulb…
Q: The graph shows the electrical energy consumption of a typical household over the period of 24 h,…
A: Power: Power can be defined as the time rate of consumption of energy. Mathematically, P=∆E∆t where…
Q: It is determined by immersing a crown in water that its volume is 29 in³ = (a) What would its weight…
A: Given,Volume = 0.017 ft³Density of pure silver = 0.379 lb/ft³.Density of juniper wood = 37 lb/ft³.To…
Q: A stationary ball is hit with an average force of (1.300x10^3) N. If the ball has mass (3.900x10^2)…
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Q: How long will it take a 4 hp motor to lift 400 kg piano to a sixth story window 1800 m above?
A: 1hp =746W so 4hp=4*746=2984W Mass ,m =400kg Height, h=1800m energy required to lift, E=mgh where g…
Q: What is the cost of operating a 5.00 W electric clock for a year if the cost of electricity is…
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Q: 5. A person used his 1500 W air-conditioning unit for 6 h every day during the month of July. a. How…
A: Given Power of AC = P = 1500 W Daily used time = t = 6 h Electricity cost = P9.45/kWh We have to…
Q: An object of mass 1.3 kg, with an initial velocity of 0.0 i m/s, is hit with an average force of 424…
A: mass = 1.3 kg Initial velocity = 0.0 msforce (f) = 424 i^ N time (t) = 113 ms = 0.113 s
Q: L Which of the following is true? 0 kxk=1 O kxk=2 jxk=i Ok+k=j
A: According to question we need to choose correct option.
Q: A 1000kg car traveling at 35 m/s takes 9 m to stop under full braking The same car under similar…
A: Given data *The mass of the car is m = 1000 kg *The initial speed of the car is u = 35 m/s *The…
Q: Q2(Hw) In two Wattmeter method, iff W-120.6W W2%=220,5W, Calculate the load p.f.
A: The phase angle (lag) in two wattmeter method is given by : Putting values :
Q: kWh = ___________ a) 3.6 × 106 J b) 3.6 × 105 J c) 0.36 × 106 J d) 0.36 × 105 J
A: A
Q: A lightbulb has an average power output of 125 watts. If the lightbulb is left on for an hour, what…
A: Given: The power output of the lightbulb is 125 W. The running time of the bulb is 1 hour.…
Q: An electric heater of 1000 W is used for two hours in a day? What is the cost of using it for a…
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Q: Charging a cellular phone for 2 hours usually requires 1,080 Joules. What is the power rating of the…
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Q: 12. How long will it take a 2750-W motor to lift a 385-kg piano to a sixth-story window 16.0 m…
A: Given, Power = 2750 W mass = 385 kg length = 16 m
Q: A motor boat moves at a steady speed of 4 m/s. Water - resistance acting on it is 1035 N. Calculate…
A: Given data : Force = F Speed of the boat =…
Q: Shark Industries has the theoretical capability to produce 120,000 units per month but currently…
A: 1.conversion cost for the month is 550000 for 7500 production hr per monthso,currect productivity…
Q: 10. Who is working harder, Fred running a 10 min mile pace at a 10% grade or Pete who is 65 kg,…
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Q: How long will it take a 25 W machine to produce 438 J of work?
A: Power(p)= Work/Time So, Time = Work/Power
Q: A computer uses 1.62 x 10^4 J in one hour. What is the power used?
A: The energy usage of device is 1.62 ×104J in one hour. Power is the rate with respect to time at…
Q: m = 0.045 kg k = 490 N/m Δx = 0.13 m 2.2 J lost due to friction v = 6.4 m Find h.
A: Given: mass m=0.045 kg k=490 N/m ∆x=0.13 2.2 J is lost due to friction, v=6.4 m To find: h=?
Q: A body falls in a medium offering a resistance proportional to the speed at any time. If the…
A: The net fore acting on the body can be written as Fnet=mg-FR 1…
Q: Name the physical quantities related to the following units : watt
A: Power is defined as the rate of doing work. Power = Work/time The SI unit of power is Watt.
Q: 7. An electric motor with an efficiency of 80% has a power output of 4.00 horsepower. The power…
A: Given, Output power = 4 horsepower. Efficiency = 80% Motor runs for = 3 hour Charges = $0.15 per kWH…
Q: 33. Energy is a _________ quantity. a. Scalar b. Vector
A: Energy is defined as the capacity of doing work.
Q: Question 15 Suppose a 12.0V potential difference is placed across a cylindrical conductor of…
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Q: How LONG DOES IT TAKE for a 75 Watt light bulb to burn out if it can 4 p perform 600,0dO J of work…
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Q: A 300W computer is used for 90 minutes. What is the energy used in kWh? How much will it cost to run…
A: Given Data: The power used by the computer is: P=300 W The time duration in which P amount of power…
Q: - A moving object whose initial KE is 10 J is subject to a frictional force of 2 N that acts in the…
A: Given data: Initial kinetic energy (KEi) = 10 J Final kinetic energy (KEf) = 0 J Force (F) = 2 N…
Q: What is the average power consumption in watts of an appliance that uses 6.62 kW · h of energy per…
A: We know that the appliance uses 6.62 kW.h of energy per day and in this question, we need to…
Q: 1 Selling electricity, part 2 At the radius of the earth's orbit, the intensity of sunlight is I =…
A: According to the guidelines we are allowed to attempt only one question
Q: A lamp consumes 1200 J of electrical energy in 13 s. What is it's Power ?
A: Given data: Energy (E) = 1200 J Time (t) = 13 s Required: Power (P)
Q: What is the work done by the walking man that uses a power of 24 J/s in 45 sec? handwriting answers
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Q: A 1200kg car travelling at 15m/s experiences an air resistance of 5000N and road friction of 7500N.…
A:
Q: a 1000t locomotive is released from rest at the top of 2% grade 1968ft long. At the foot of the…
A: Given, Weight of locomotive = 1000 t Release from rest initial velocity, u=0…
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